#include "xgd2017.h"
#include "xgd2018.h"
#include "xgd2019.h"
#include "bytedance.h"
#include "utils.h"
#include <iostream>
#include <ostream>
#include<cstring>
#include<string>
#include <vector>
#include<set>
using namespace std;

int main(){
	two_2017();


	return 0;
}